Oh yeah deff, I thought it used vacuum solenoids to operate the doors but now I think there are electric actuators instead. The temp sensors I think are located behind these little slotted squares, there is one down by your feet another by the HVAC in the center of the dash and I think another in the gauge cluster or something...a total of 3?
The hardest thing to figure out will be the blending door and re-circulation...I need to figure out what works the blending doors in the GC to start, also the re-circulation is a huge mystery.
Not only do I not know how it functions in the GC I also don't fully understand it in my Dak...originally being an 88 base package I had no AC with a basic control face (no AC button). I swapped the control unit with one from a 93/94 which was slightly different and had an AC button, the other thing this has the original did not was the re-circulation to the left past cold. This functions on the same cable as the blending door(s) so you HAVE to go all the way cold before you can re-circulate (assuming it was required for the AC?). See I don't even know if my air box has a re-circulation function when the cold is maxed out to the left, at first it would stop at coldest and would not push any farther over...over time it has now moved over and kind of "clicks in" when you get to re-circulation as if there is a notch for it that was never used on my airbox?